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Patent Searching and Data


Title:
AN APPARATUS AND METHOD FOR MILLING A WINDOW IN A BOREHOLE
Document Type and Number:
WIPO Patent Application WO/2019/025761
Kind Code:
A3
Abstract:
A tool for milling a window in a casing (3) of a borehole, the tool comprising: a main body having a longitudinal axis wherein, when the tool is run into a borehole, the longitudinal axis is substantially parallel with the longitudinal axis of the borehole, the main body comprising a deflection surface (7) which is disposed at an angle with respect to the longitudinal axis; a milling arrangement comprising a milling head (11) and a guidance surface (13), wherein the guidance surface is disposed at an angle with respect to the longitudinal axis of the tool and is in contact with the deflection surface; and a drive arrangement (14) which is operable to effect relative longitudinal movement between the main body and the milling arrangement.

Inventors:
MCGARIAN, Bruce (23 East Glebe, StonehavenAberdeen, Grampian AB39 2HW, AB39 2HW, GB)
Application Number:
GB2018/052087
Publication Date:
March 14, 2019
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
MCGARIAN, Bruce (23 East Glebe, StonehavenAberdeen, Grampian AB39 2HW, AB39 2HW, GB)
International Classes:
E21B29/06; E21B7/06
Attorney, Agent or Firm:
FORRESTERS IP LLP (3rd floor, Sherborne House119-121 Cannon Stree, London Greater London EC4N 5AT, EC4N 5AT, GB)
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